The study of parameters in the construction technology of Lime-treated expansive soils

Expansive soil is high plastic clay that has properties of dilatability, much fissure and over consolidation, which mainly consists of montmorillonite that is a strongly hydrophilic clay miner and illite. As Chinese territory is vast and wide, there are a lot of expansive soils, especially in the south-eastern coastal areas. And the regional feature virtually constrained the development of our traffic infrastructure construction seriously. Based on subgrade field testing, this paper carry out a deep study on soil moisture content, particle fineness and containing ash rate which are the main control parameters of Lime-treated expansive soil. Results of this study have sound theoretic and practical significance to improve our construction technology of Lime treated expansive soil.